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Detailed Reference Information |
Gulbrandsen, R.A. (1966). Chemical composition of phosphorites of the Phosphoria Formation. Geochimica et Cosmochimica Acta 30(8): 769-778. doi: 10.1016/0016-7037(66)90131-1. |
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Results are presented of chemical analyses of 60 phosphorite samples from the Phosphoria Formation. The phosphate is basically apatite, with small but significant variable substitutions (Na, Sr, U, and Th for Ca; CO (sub 3) and SO (sub 4) for PO (sub 4) ). Rare metals not associated with apatite are associated mainly with the organic-matter component; Cr is most abundant. The average phosphorite consists of about 80 percent apatite, 10 percent quartz, 5 percent muscovite-illite, 2 percent organic matter, 1 percent dolomite-calcite, 1 percent iron oxide, and 1 percent other components. Texturally it is a medium-grained pellet phosphorite. |
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GERM Reservoir Database |
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BACKGROUND DATA FILES |
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Abstract |
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Table 1A |
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Table 1B |
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Table 1C |
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Table 1D |
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Table 1E |
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Table 1F |
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Table 2 |
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Table 3 |
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Chemical Analyses |
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Major Constituents |
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Rare Metals |
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Keywords
analyses; geochemistry; major-element analyses; mineral, composition; Paleozoic; Permian; Phosphate rock; Phosphoria, Formation; sedimentary rocks; trace-element analyses; United, States; western, 02, Geochemistry |
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Publisher
Elsevier Science P.O. Box 211 1000 AE Amsterdam The Netherlands (+31) 20 485 3757 (+31) 20 485 3432 nlinfo-f@elsevier.com |
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